115312115 has 4 divisors (see below), whose sum is σ = 138374544. Its totient is φ = 92249688.

The previous prime is 115312097. The next prime is 115312117. The reversal of 115312115 is 511213511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 511213511 = 17 ⋅30071383.

It is a cyclic number.

It is not a de Polignac number, because 115312115 - 2²⁶ = 48203251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115312117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11531207 + ... + 11531216.

It is an arithmetic number, because the mean of its divisors is an integer number (34593636).

Almost surely, 2^115312115 is an apocalyptic number.

115312115 is a deficient number, since it is larger than the sum of its proper divisors (23062429).

115312115 is an equidigital number, since it uses as much as digits as its factorization.

115312115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23062428.

The product of its digits is 150, while the sum is 20.

The square root of 115312115 is about 10738.3478710647. The cubic root of 115312115 is about 486.7339570952.

Adding to 115312115 its reverse (511213511), we get a palindrome (626525626).

The spelling of 115312115 in words is "one hundred fifteen million, three hundred twelve thousand, one hundred fifteen".